Application of PIV to velocity measurements in a liquid film flowing down an inclined cylinder

被引：42
作者：
Alekseenko, S. V.
Antipin, V. A.
Bobylev, A. V.
Markovich, D. M.
机构：
[1] Russian Acad Sci, Siberian Branch, Inst Thermophys, Novosibirsk 630090, Russia
[2] Novosibirsk State Univ, Novosibirsk 630090, Russia
来源：
EXPERIMENTS IN FLUIDS | 2007年 / 43卷 / 2-3期
关键词：
D O I：
10.1007/s00348-007-0322-2
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
PIV technique is applied for measurements of instant velocity distributions in a liquid film flowing down an inclined tube in the form of a wavy rivulet. An application of special optical calibration is applied to correct distortion effects caused by the curvature of the interface. A vortex flow of liquid is observed inside a wave hump in the reference system moving with wave phase velocity. Conditionally averaged profiles of longitudinal and transverse components of liquid velocity are obtained for different cross-sections of developed non-linear waves. It is shown that the increase in wave amplitude slightly changes the location of the vortex center. The analysis of modification of vortex motion character due to wavy flow conditions, such as tube inclination angle, film Reynolds number, wave excitation frequency, is fulfilled.
引用
收藏
页码：197 / 207
页数：11
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